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3rd Grade
3rd Grade
4th Grade
4th Grade
100
0 x 1 =
0
100
1 x 7 =
7
100
Use mental math to complete. 5 x 2 = 10. 5 x 20 = 100 5 x 200 =
1000
100
Use mental math to complete. 4 x 3 = 12 4 x 30 = 120 4 x 300 = 1200 4 x 3000 =
12,000
200
2 x 4 =
8
200
3 x 4 =
12
200
You can _________ to find a number that is close to an exact amount.
estimate
200
Numbers that are easy to compute mentally are called ___________.
compatible numbers
300
4 x 6 =
24
300
5 x 5 =
25
300
Estimate the product. 5 x 432
5 x 400 = 2,000
300
Estimate the product. 6 x $8.64
6 x $9.00 = $54.00
400
5 x 9 =
45
400
4 x 7 =
28
400
Find the product. $7.50 x 4
$30.00
400
$7.68 x 3
$23.04
500
3 x 11 =
33
500
4 x 12 =
48
500
3,875 x 8
31,000
500
5,235 x 9
47,115